Latin name - Arctostaphylos uva ursi. Herbal tinctures are made by extracting the herbal constituents of a plant in a mixture of water and alcohol.

Avoid During Pregnancy & Breastfeeding
Herbs taken in theraputic dosages should be checked for safety and use during pregnancy and breast feeding in consultation with a qualified herbal practitioner. This herb should not be used internally during pregnancy unless prescribed by a qualified medical herbalist trained in the appropriate use of these substances. 

Caution:
Do not use for prolonged periods without consultation with a qualified herbalist. Will work best when urine alkaline pH. Due to high tannin content, may cause cramping, nausia, vomiting, constipation.